Across
- 1. a sound made underwater will take...time to travel a certain distance than a sound made in air
- 4. a high-pitched sound will have waves that have a...wavelength
- 6. a sound wave is produced by something that is..
- 7. distance from the centre of the wave to the highest or lowest point is called
- 9. finding the distance to an object in this way is call..
- 10. the solid, liquid, or gas that the sound wave is moving through is called the..
Down
- 2. refection of sound
- 3. the dolphin makes a series of...sounds which reflect off a solid object such as a fish
- 5. the sound reflects off all the surfaces and echoes can last for several seconds, muddying the sound.
- 8. very-high-frequency sound that can be used to make an image of a fetus